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<div id="projectname">libaaruformat<span id="projectnumber">&#160;1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<div class="headertitle"><div class="title">wii_crypto.h File Reference</div></div>
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<div class="textblock"><code>#include &lt;stdbool.h&gt;</code><br />
<code>#include &lt;stdint.h&gt;</code><br />
</div>
<p><a href="wii__crypto_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-nested-classes" class="groupheader"><a id="nested-classes" name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:WiiPartitionRegion" id="r_WiiPartitionRegion"><td class="memItemLeft">struct &#160;</td><td class="memItemRight"><a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A Wii partition region entry (in-memory representation). <a href="structWiiPartitionRegion.html#details">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 id="header-define-members" class="groupheader"><a id="define-members" name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:ad8587c84f30a3f328869e304138d3ad8" id="r_ad8587c84f30a3f328869e304138d3ad8"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#ad8587c84f30a3f328869e304138d3ad8">AARUFORMAT_CONTEXT_DECLARED</a></td></tr>
<tr class="memitem:a938e4b044436cfa7be47752ae7b58956" id="r_a938e4b044436cfa7be47752ae7b58956"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#a938e4b044436cfa7be47752ae7b58956">WII_GROUP_SIZE</a>&#160;&#160;&#160;0x8000</td></tr>
<tr class="memdesc:a938e4b044436cfa7be47752ae7b58956"><td class="mdescLeft">&#160;</td><td class="mdescRight">Wii physical group size (32 KiB). <br /></td></tr>
<tr class="memitem:ac673ea3e31315ae51d390d06df7340cb" id="r_ac673ea3e31315ae51d390d06df7340cb"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#ac673ea3e31315ae51d390d06df7340cb">WII_GROUP_HASH_SIZE</a>&#160;&#160;&#160;0x0400</td></tr>
<tr class="memdesc:ac673ea3e31315ae51d390d06df7340cb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Hash block size within a group (1 KiB). <br /></td></tr>
<tr class="memitem:ab21867411a4f988431fc692baa0389d6" id="r_ab21867411a4f988431fc692baa0389d6"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#ab21867411a4f988431fc692baa0389d6">WII_GROUP_DATA_SIZE</a>&#160;&#160;&#160;0x7C00</td></tr>
<tr class="memdesc:ab21867411a4f988431fc692baa0389d6"><td class="mdescLeft">&#160;</td><td class="mdescRight">User data size within a group (31 KiB). <br /></td></tr>
<tr class="memitem:af6ed59742196c351932ad0f0e5e43566" id="r_af6ed59742196c351932ad0f0e5e43566"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#af6ed59742196c351932ad0f0e5e43566">WII_LOGICAL_PER_GROUP</a>&#160;&#160;&#160;16</td></tr>
<tr class="memdesc:af6ed59742196c351932ad0f0e5e43566"><td class="mdescLeft">&#160;</td><td class="mdescRight">Number of 2048-byte logical sectors per group. <br /></td></tr>
<tr class="memitem:a9ee328ed858e3139fbae54c007a00d64" id="r_a9ee328ed858e3139fbae54c007a00d64"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#a9ee328ed858e3139fbae54c007a00d64">WII_SECTOR_SIZE</a>&#160;&#160;&#160;2048</td></tr>
<tr class="memdesc:a9ee328ed858e3139fbae54c007a00d64"><td class="mdescLeft">&#160;</td><td class="mdescRight">Logical sector size in bytes. <br /></td></tr>
<tr class="memitem:aad4c6376c0653f8b2836fa3a703a97ad" id="r_aad4c6376c0653f8b2836fa3a703a97ad"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#aad4c6376c0653f8b2836fa3a703a97ad">WII_MAX_PARTITIONS</a>&#160;&#160;&#160;32</td></tr>
<tr class="memdesc:aad4c6376c0653f8b2836fa3a703a97ad"><td class="mdescLeft">&#160;</td><td class="mdescRight">Maximum number of partitions supported. <br /></td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:a2e99ff5ec316b2357eb25684f6e7b89f" id="r_a2e99ff5ec316b2357eb25684f6e7b89f"><td class="memItemLeft">typedef struct WiiPartitionRegion&#160;</td><td class="memItemRight"><a class="el" href="#a2e99ff5ec316b2357eb25684f6e7b89f">WiiPartitionRegion</a></td></tr>
<tr class="memdesc:a2e99ff5ec316b2357eb25684f6e7b89f"><td class="mdescLeft">&#160;</td><td class="mdescRight">A Wii partition region entry (in-memory representation). <br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a1ce70cb0d83e9893accd7f06f218146a" id="r_a1ce70cb0d83e9893accd7f06f218146a"><td class="memItemLeft">const uint8_t *&#160;</td><td class="memItemRight"><a class="el" href="#a1ce70cb0d83e9893accd7f06f218146a">wii_get_sector_key</a> (const <a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a> *regions, uint32_t region_count, uint64_t logical_sector)</td></tr>
<tr class="memdesc:a1ce70cb0d83e9893accd7f06f218146a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the encryption key for a given logical sector (2048-byte). <br /></td></tr>
<tr class="memitem:a96843770fc0189beeae56cbab35c1d79" id="r_a96843770fc0189beeae56cbab35c1d79"><td class="memItemLeft">bool&#160;</td><td class="memItemRight"><a class="el" href="#a96843770fc0189beeae56cbab35c1d79">wii_is_sector_encrypted</a> (const <a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a> *regions, uint32_t region_count, uint64_t logical_sector)</td></tr>
<tr class="memdesc:a96843770fc0189beeae56cbab35c1d79"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if a logical sector is in an encrypted region. <br /></td></tr>
<tr class="memitem:a95d508bfdafd91552793ad54a677d511" id="r_a95d508bfdafd91552793ad54a677d511"><td class="memItemLeft">void&#160;</td><td class="memItemRight"><a class="el" href="#a95d508bfdafd91552793ad54a677d511">wii_encrypt_group</a> (const uint8_t key[16], const uint8_t *hash_block, const uint8_t *data_in, uint8_t *out)</td></tr>
<tr class="memdesc:a95d508bfdafd91552793ad54a677d511"><td class="mdescLeft">&#160;</td><td class="mdescRight">Encrypt a Wii group (0x8000 bytes) from separate hash_block + data. <br /></td></tr>
<tr class="memitem:aaf605c039a65fc8507d97ef47b6641ee" id="r_aaf605c039a65fc8507d97ef47b6641ee"><td class="memItemLeft">void&#160;</td><td class="memItemRight"><a class="el" href="#aaf605c039a65fc8507d97ef47b6641ee">wii_decrypt_group</a> (const uint8_t key[16], const uint8_t *in, uint8_t *hash_block, uint8_t *data_out)</td></tr>
<tr class="memdesc:aaf605c039a65fc8507d97ef47b6641ee"><td class="mdescLeft">&#160;</td><td class="mdescRight">Decrypt a Wii group (0x8000 bytes) into separate hash_block + data. <br /></td></tr>
<tr class="memitem:a6bf12a89fe7f2d5be3fa99dc69e19979" id="r_a6bf12a89fe7f2d5be3fa99dc69e19979"><td class="memItemLeft">int32_t&#160;</td><td class="memItemRight"><a class="el" href="#a6bf12a89fe7f2d5be3fa99dc69e19979">wii_serialize_partition_key_map</a> (const <a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a> *regions, uint32_t count, uint8_t **out_data, uint32_t *out_len)</td></tr>
<tr class="memdesc:a6bf12a89fe7f2d5be3fa99dc69e19979"><td class="mdescLeft">&#160;</td><td class="mdescRight">Serialize a Wii partition key map for storage as a media tag. <br /></td></tr>
<tr class="memitem:a2b7a0d75fbfe5563b03a6e83d528402a" id="r_a2b7a0d75fbfe5563b03a6e83d528402a"><td class="memItemLeft">int32_t&#160;</td><td class="memItemRight"><a class="el" href="#a2b7a0d75fbfe5563b03a6e83d528402a">wii_deserialize_partition_key_map</a> (const uint8_t *data, uint32_t data_len, <a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a> **regions, uint32_t *count)</td></tr>
<tr class="memdesc:a2b7a0d75fbfe5563b03a6e83d528402a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Deserialize a Wii partition key map from a media tag buffer. <br /></td></tr>
<tr class="memitem:aee93568d673177b4ed369b0032c6c68b" id="r_aee93568d673177b4ed369b0032c6c68b"><td class="memItemLeft">void&#160;</td><td class="memItemRight"><a class="el" href="#aee93568d673177b4ed369b0032c6c68b">wii_lazy_init</a> (<a class="el" href="structaaruformat__context.html">aaruformat_context</a> *ctx)</td></tr>
<tr class="memdesc:aee93568d673177b4ed369b0032c6c68b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Lazy initialization: load partition key map from media tags. <br /></td></tr>
</table>
<a name="doc-define-members" id="doc-define-members"></a><h2 id="header-doc-define-members" class="groupheader">Macro Definition Documentation</h2>
<a id="ad8587c84f30a3f328869e304138d3ad8" name="ad8587c84f30a3f328869e304138d3ad8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad8587c84f30a3f328869e304138d3ad8">&#9670;&#160;</a></span>AARUFORMAT_CONTEXT_DECLARED</h2>
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<td class="memname">#define AARUFORMAT_CONTEXT_DECLARED</td>
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<p class="definition">Definition at line <a class="el" href="wii__crypto_8h_source.html#l00029">29</a> of file <a class="el" href="wii__crypto_8h_source.html">wii_crypto.h</a>.</p>
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<a id="ab21867411a4f988431fc692baa0389d6" name="ab21867411a4f988431fc692baa0389d6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab21867411a4f988431fc692baa0389d6">&#9670;&#160;</a></span>WII_GROUP_DATA_SIZE</h2>
<div class="memitem">
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<td class="memname">#define WII_GROUP_DATA_SIZE&#160;&#160;&#160;0x7C00</td>
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<p>User data size within a group (31 KiB). </p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8h_source.html#l00040">40</a> of file <a class="el" href="wii__crypto_8h_source.html">wii_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="wii__crypto_8c_source.html#l00087">wii_decrypt_group()</a>, <a class="el" href="wii__crypto_8c_source.html#l00071">wii_encrypt_group()</a>, and <a class="el" href="read_8c_source.html#l00044">wii_reconstruct_group_junk()</a>.</p>
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<a id="ac673ea3e31315ae51d390d06df7340cb" name="ac673ea3e31315ae51d390d06df7340cb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac673ea3e31315ae51d390d06df7340cb">&#9670;&#160;</a></span>WII_GROUP_HASH_SIZE</h2>
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<td class="memname">#define WII_GROUP_HASH_SIZE&#160;&#160;&#160;0x0400</td>
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<p>Hash block size within a group (1 KiB). </p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8h_source.html#l00039">39</a> of file <a class="el" href="wii__crypto_8h_source.html">wii_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>, <a class="el" href="wii__crypto_8c_source.html#l00087">wii_decrypt_group()</a>, <a class="el" href="wii__crypto_8c_source.html#l00071">wii_encrypt_group()</a>, and <a class="el" href="read_8c_source.html#l00044">wii_reconstruct_group_junk()</a>.</p>
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<a id="a938e4b044436cfa7be47752ae7b58956" name="a938e4b044436cfa7be47752ae7b58956"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a938e4b044436cfa7be47752ae7b58956">&#9670;&#160;</a></span>WII_GROUP_SIZE</h2>
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<td class="memname">#define WII_GROUP_SIZE&#160;&#160;&#160;0x8000</td>
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<p>Wii physical group size (32 KiB). </p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8h_source.html#l00038">38</a> of file <a class="el" href="wii__crypto_8h_source.html">wii_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="wii__crypto_8c_source.html#l00180">wii_lazy_init()</a>, and <a class="el" href="read_8c_source.html#l00044">wii_reconstruct_group_junk()</a>.</p>
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<a id="af6ed59742196c351932ad0f0e5e43566" name="af6ed59742196c351932ad0f0e5e43566"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af6ed59742196c351932ad0f0e5e43566">&#9670;&#160;</a></span>WII_LOGICAL_PER_GROUP</h2>
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<td class="memname">#define WII_LOGICAL_PER_GROUP&#160;&#160;&#160;16</td>
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<p>Number of 2048-byte logical sectors per group. </p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8h_source.html#l00041">41</a> of file <a class="el" href="wii__crypto_8h_source.html">wii_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>, and <a class="el" href="wii__crypto_8c_source.html#l00045">wii_get_sector_key()</a>.</p>
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<a id="aad4c6376c0653f8b2836fa3a703a97ad" name="aad4c6376c0653f8b2836fa3a703a97ad"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aad4c6376c0653f8b2836fa3a703a97ad">&#9670;&#160;</a></span>WII_MAX_PARTITIONS</h2>
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<td class="memname">#define WII_MAX_PARTITIONS&#160;&#160;&#160;32</td>
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<p>Maximum number of partitions supported. </p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8h_source.html#l00043">43</a> of file <a class="el" href="wii__crypto_8h_source.html">wii_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="wii__crypto_8c_source.html#l00132">wii_deserialize_partition_key_map()</a>, and <a class="el" href="wii__crypto_8c_source.html#l00105">wii_serialize_partition_key_map()</a>.</p>
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<a id="a9ee328ed858e3139fbae54c007a00d64" name="a9ee328ed858e3139fbae54c007a00d64"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9ee328ed858e3139fbae54c007a00d64">&#9670;&#160;</a></span>WII_SECTOR_SIZE</h2>
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<td class="memname">#define WII_SECTOR_SIZE&#160;&#160;&#160;2048</td>
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<p>Logical sector size in bytes. </p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8h_source.html#l00042">42</a> of file <a class="el" href="wii__crypto_8h_source.html">wii_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00044">wii_reconstruct_group_junk()</a>.</p>
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<a name="doc-typedef-members" id="doc-typedef-members"></a><h2 id="header-doc-typedef-members" class="groupheader">Typedef Documentation</h2>
<a id="a2e99ff5ec316b2357eb25684f6e7b89f" name="a2e99ff5ec316b2357eb25684f6e7b89f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2e99ff5ec316b2357eb25684f6e7b89f">&#9670;&#160;</a></span>WiiPartitionRegion</h2>
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<td class="memname">typedef struct WiiPartitionRegion WiiPartitionRegion</td>
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<p>A Wii partition region entry (in-memory representation). </p>
<p>Stores the physical sector range and AES-128 key for one partition. Physical sector numbers are in 0x8000-byte units. </p>
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<a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Function Documentation</h2>
<a id="aaf605c039a65fc8507d97ef47b6641ee" name="aaf605c039a65fc8507d97ef47b6641ee"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aaf605c039a65fc8507d97ef47b6641ee">&#9670;&#160;</a></span>wii_decrypt_group()</h2>
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<td class="memname">void wii_decrypt_group </td>
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<td class="paramtype">const uint8_t</td> <td class="paramname"><span class="paramname"><em>key</em></span>[16], </td>
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<td class="paramtype">const uint8_t *</td> <td class="paramname"><span class="paramname"><em>in</em></span>, </td>
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<td class="paramtype">uint8_t *</td> <td class="paramname"><span class="paramname"><em>hash_block</em></span>, </td>
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<td class="paramtype">uint8_t *</td> <td class="paramname"><span class="paramname"><em>data_out</em></span>&#160;)</td>
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<p>Decrypt a Wii group (0x8000 bytes) into separate hash_block + data. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>16-byte AES-128 partition key. </td></tr>
<tr><td class="paramname">in</td><td>0x8000-byte encrypted input. </td></tr>
<tr><td class="paramname">hash_block</td><td>0x400-byte output for hash block. </td></tr>
<tr><td class="paramname">data_out</td><td>0x7C00-byte output for user data. </td></tr>
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</dd>
</dl>
<p>&lt; Hash block size within a group (1 KiB).</p>
<p>&lt; Hash block size within a group (1 KiB).</p>
<p>&lt; Hash block size within a group (1 KiB).</p>
<p>&lt; User data size within a group (31 KiB).</p>
<p>&lt; User data size within a group (31 KiB).</p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8c_source.html#l00087">87</a> of file <a class="el" href="wii__crypto_8c_source.html">wii_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="aes128_8c_source.html#l00290">aes128_cbc_decrypt()</a>, <a class="el" href="wii__crypto_8h_source.html#l00040">WII_GROUP_DATA_SIZE</a>, and <a class="el" href="wii__crypto_8h_source.html#l00039">WII_GROUP_HASH_SIZE</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2b7a0d75fbfe5563b03a6e83d528402a">&#9670;&#160;</a></span>wii_deserialize_partition_key_map()</h2>
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<td class="memname">int32_t wii_deserialize_partition_key_map </td>
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<td class="paramtype">const uint8_t *</td> <td class="paramname"><span class="paramname"><em>data</em></span>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>data_len</em></span>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a> **</td> <td class="paramname"><span class="paramname"><em>regions</em></span>, </td>
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<td class="paramtype">uint32_t *</td> <td class="paramname"><span class="paramname"><em>count</em></span>&#160;)</td>
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<p>Deserialize a Wii partition key map from a media tag buffer. </p>
<p>&lt; Maximum number of partitions supported.</p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8c_source.html#l00132">132</a> of file <a class="el" href="wii__crypto_8c_source.html">wii_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="wii__crypto_8h_source.html#l00054">WiiPartitionRegion::end_sector</a>, <a class="el" href="wii__crypto_8c_source.html#l00032">read_le32()</a>, <a class="el" href="wii__crypto_8h_source.html#l00053">WiiPartitionRegion::start_sector</a>, and <a class="el" href="wii__crypto_8h_source.html#l00043">WII_MAX_PARTITIONS</a>.</p>
<p class="reference">Referenced by <a class="el" href="wii__crypto_8c_source.html#l00180">wii_lazy_init()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a95d508bfdafd91552793ad54a677d511">&#9670;&#160;</a></span>wii_encrypt_group()</h2>
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<td class="memname">void wii_encrypt_group </td>
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<td class="paramtype">const uint8_t</td> <td class="paramname"><span class="paramname"><em>key</em></span>[16], </td>
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<td class="paramkey"></td>
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<td class="paramtype">const uint8_t *</td> <td class="paramname"><span class="paramname"><em>hash_block</em></span>, </td>
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<td class="paramtype">const uint8_t *</td> <td class="paramname"><span class="paramname"><em>data_in</em></span>, </td>
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<p>Encrypt a Wii group (0x8000 bytes) from separate hash_block + data. </p>
<p>The hash block IV is all zeros. The data IV is bytes 0x3D0..0x3DF of the encrypted hash block output (matching Dolphin's VolumeWii::EncryptBlock).</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>16-byte AES-128 partition key. </td></tr>
<tr><td class="paramname">hash_block</td><td>0x400-byte hash block (plaintext input). </td></tr>
<tr><td class="paramname">data_in</td><td>0x7C00-byte user data (plaintext input). </td></tr>
<tr><td class="paramname">out</td><td>0x8000-byte output buffer (encrypted). </td></tr>
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</dd>
</dl>
<p>&lt; Hash block size within a group (1 KiB).</p>
<p>&lt; Hash block size within a group (1 KiB).</p>
<p>&lt; Hash block size within a group (1 KiB).</p>
<p>&lt; User data size within a group (31 KiB).</p>
<p>&lt; Hash block size within a group (1 KiB).</p>
<p>&lt; User data size within a group (31 KiB).</p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8c_source.html#l00071">71</a> of file <a class="el" href="wii__crypto_8c_source.html">wii_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="aes128_8c_source.html#l00274">aes128_cbc_encrypt()</a>, <a class="el" href="wii__crypto_8h_source.html#l00040">WII_GROUP_DATA_SIZE</a>, and <a class="el" href="wii__crypto_8h_source.html#l00039">WII_GROUP_HASH_SIZE</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1ce70cb0d83e9893accd7f06f218146a">&#9670;&#160;</a></span>wii_get_sector_key()</h2>
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<td class="memname">const uint8_t * wii_get_sector_key </td>
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<td class="paramtype">const <a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a> *</td> <td class="paramname"><span class="paramname"><em>regions</em></span>, </td>
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<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>region_count</em></span>, </td>
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<td class="paramtype">uint64_t</td> <td class="paramname"><span class="paramname"><em>logical_sector</em></span>&#160;)</td>
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<p>Get the encryption key for a given logical sector (2048-byte). </p>
<p>Converts the logical sector address to a physical sector address, then looks up which partition it belongs to and whether it is encrypted.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">regions</td><td>Array of partition regions. </td></tr>
<tr><td class="paramname">region_count</td><td>Number of partition regions. </td></tr>
<tr><td class="paramname">logical_sector</td><td>Logical sector address (2048-byte units). </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Pointer to the 16-byte key if encrypted, NULL if plaintext. </dd></dl>
<p>&lt; Number of 2048-byte logical sectors per group.</p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8c_source.html#l00045">45</a> of file <a class="el" href="wii__crypto_8c_source.html">wii_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="wii__crypto_8h_source.html#l00055">WiiPartitionRegion::key</a>, and <a class="el" href="wii__crypto_8h_source.html#l00041">WII_LOGICAL_PER_GROUP</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>, and <a class="el" href="wii__crypto_8c_source.html#l00066">wii_is_sector_encrypted()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a96843770fc0189beeae56cbab35c1d79">&#9670;&#160;</a></span>wii_is_sector_encrypted()</h2>
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<td class="memname">bool wii_is_sector_encrypted </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a> *</td> <td class="paramname"><span class="paramname"><em>regions</em></span>, </td>
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<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>region_count</em></span>, </td>
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<td class="paramtype">uint64_t</td> <td class="paramname"><span class="paramname"><em>logical_sector</em></span>&#160;)</td>
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<p>Check if a logical sector is in an encrypted region. </p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8c_source.html#l00066">66</a> of file <a class="el" href="wii__crypto_8c_source.html">wii_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="wii__crypto_8c_source.html#l00045">wii_get_sector_key()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aee93568d673177b4ed369b0032c6c68b">&#9670;&#160;</a></span>wii_lazy_init()</h2>
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<td class="memname">void wii_lazy_init </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structaaruformat__context.html">aaruformat_context</a> *</td> <td class="paramname"><span class="paramname"><em>ctx</em></span></td><td>)</td>
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<p>Lazy initialization: load partition key map from media tags. </p>
<p>Populates ctx-&gt;wii_partition_regions and allocates the group cache.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>AaruFormat context. </td></tr>
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</dd>
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<p>&lt; Wii physical group size (32 KiB).</p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8c_source.html#l00180">180</a> of file <a class="el" href="wii__crypto_8c_source.html">wii_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="context_8h_source.html#l00123">mediaTagEntry::data</a>, <a class="el" href="aaru_8h_source.html#l01086">kMediaTagWiiPartitionKeyMap</a>, <a class="el" href="context_8h_source.html#l00125">mediaTagEntry::length</a>, <a class="el" href="context_8h_source.html#l00267">aaruformat_context::mediaTags</a>, <a class="el" href="context_8h_source.html#l00375">aaruformat_context::wii_cache_valid</a>, <a class="el" href="wii__crypto_8c_source.html#l00132">wii_deserialize_partition_key_map()</a>, <a class="el" href="context_8h_source.html#l00373">aaruformat_context::wii_encrypted_group_cache</a>, <a class="el" href="wii__crypto_8h_source.html#l00038">WII_GROUP_SIZE</a>, <a class="el" href="context_8h_source.html#l00371">aaruformat_context::wii_partition_region_count</a>, and <a class="el" href="context_8h_source.html#l00370">aaruformat_context::wii_partition_regions</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6bf12a89fe7f2d5be3fa99dc69e19979">&#9670;&#160;</a></span>wii_serialize_partition_key_map()</h2>
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<td class="memname">int32_t wii_serialize_partition_key_map </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="structWiiPartitionRegion.html">WiiPartitionRegion</a> *</td> <td class="paramname"><span class="paramname"><em>regions</em></span>, </td>
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<td class="paramtype">uint32_t *</td> <td class="paramname"><span class="paramname"><em>out_len</em></span>&#160;)</td>
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<p>Serialize a Wii partition key map for storage as a media tag. </p>
<p>Same format as Wii U partition key map: [4 bytes] partition_count (uint32 LE) Per partition (24 bytes): start_sector (LE), end_sector (LE), key[16] </p>
<p>&lt; Maximum number of partitions supported.</p>
<p class="definition">Definition at line <a class="el" href="wii__crypto_8c_source.html#l00105">105</a> of file <a class="el" href="wii__crypto_8c_source.html">wii_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="wii__crypto_8h_source.html#l00043">WII_MAX_PARTITIONS</a>, and <a class="el" href="wii__crypto_8c_source.html#l00035">write_le32()</a>.</p>
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